IP multimedia Subsystem (IMS) is a set of specifications that describes the Next Generation Networking (NGN) architecture for implementing IP based telephony and multimedia services.
IP多媒体子系统(IMS)是一组规范，描述用于实现基于IP的电话和多媒体服务的下一代网络(NGN)体系结构。
Next-generation Networking Architectures.
下一代网络体系结构。
Next-generation Networking Architectures.
下一代网络体系结构。
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